/*
 * JBoss, Home of Professional Open Source
 * Copyright 2011, Red Hat, Inc. and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.openxdm.xcap.common.key;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;

import org.openxdm.xcap.common.uri.ElementSelector;

public class KeyUtils {

	protected static String getPercentEncodedDocumentParent(String user) {
		try {
			user = URLEncoder.encode(user,"UTF-8");
		}
		catch(UnsupportedEncodingException e) {
			// must not happen
		}
		return new StringBuilder("users/").append(user).toString();
	}
	
	protected static String getPercentEncodedString(String s) {
		try {
			return URLEncoder.encode(s,"UTF-8");
		}
		catch(UnsupportedEncodingException e) {
			// must not happen
			return null;
		}		
	}
	
	protected static String getPercentEncondedElementSelector(ElementSelector elementSelector) {
		StringBuilder percentEncodedElementSelector = new StringBuilder("/");		
		try {
			boolean first = true;
			for(int i=0;i<elementSelector.getStepsSize();i++) {
				if(!first) {
					percentEncodedElementSelector.append('/');
				}
				else {
					first = false;
				}
				percentEncodedElementSelector.append(URLEncoder.encode(elementSelector.getStep(i).toString(),"UTF-8"));
			}			
		} catch (UnsupportedEncodingException e) {
			// MUST NOT COME HERE
		}
		return percentEncodedElementSelector.toString();
	}
	
}
